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Finding the Fourth Proportional to 196,700.40, 294,710.40 and 91,303.20

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Solution

The fourth proportional to 196,700.40, 294,710.40 and 91,303.20 is: 136,796.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    196,700.40 : 294,710.40 = 91,303.20 : x
  2. Step 2: Convert to fraction form
    196,700.40/294,710.40 = 91,303.20/x
  3. Step 3: Cross multiply
    196,700.40x = 294,710.40 × 91,303.20
  4. Step 4: Simplify right side
    196,700.40x = 26,908,002,593.28
  5. Step 5: Solve for x
    x = 26,908,002,593.28/196,700.40
  6. Step 6: Final answer
    x = 136,796.89

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.